Tag: tuning

Mini Cooper S R53 JCW – Airbox Intake Modification

I wanted to replace the stock air pipe, as it contains a resonator which keeps it silent. It’s also not optimised, leaving room for improvement.

Used 2 aluminium joiners/couplers and flexible piping. Very happy with this cost effective result! Also, I love the supercharger whine 🙂

I also ordered a K&N RU-3190 filter, I didn’t know the previous owner fitted a Pipercross PX1875. In the end I sold the K&N as the fitment wasn’t good.

Mini Cooper S R53 JCW Airbox Intake Modification

Mini Cooper S R53 JCW Airbox Intake Modification

Mini Cooper S R53 JCW Pipercross PX1875 vs K&N RU-3190

Mini Cooper S R53 JCW Pipercross PX1875 vs K&N RU-3190


Mini Cooper S R53 JCW – Vacuum Gain System VGS Modification

As usual, the Mini Cooper S with the Eaton M45 supercharger also has a bypass valve, which helps with fuel economy and lighten the load on the supercharger during idling (for instance). On NAM (North American Motoring forum) I noticed a popular mod, which is also known as the VGS or Vacuum Gain System modification.

Basically, the VGS mod changes the way the Bypass valve is operated. From indirect vacuum to direct vacuum, allowing faster response of the butterfly valve, but also keeping it shut better so no boost is lost.

I liked it in the beginning, but it makes for a rough driving experience. So in the end I reverted and never went back. Thats why we experiment 🙂

Source: https://www.northamericanmotoring.com/forums/how-to/38268-drivetrain-operation-vacuum-gain-system-vgs.html

Changing the vacuum line routing.

Mini Cooper S R53 JCW Bypass Valve VGS Mod

Mini Cooper S R53 JCW Bypass Valve VGS Mod

Brand new Bapmic Compressor Bypass Valve (CBV).

Mini Cooper S R53 JCW Compressor Bypass Valve

Modifying the bypass valve.

Mini Cooper S R53 JCW Compressor Bypass Valve


Volvo S80 2.4T JR Jetex Uprated Panel Filter

Decided to buy a panel filter from JR / Jetex. Build quality is nice, but could be better. Fitment looked like 100%, but unfortunately that wasn’t the case.

I tried to modify it a little bit, but that went wrong and I had to throw it away.

Volvo S80 2.4T JR Uprated Panel Filter

Volvo S80 2.4T JR Uprated Panel Filter




Volvo S80 2.4T Thermatec Teflon Intake Spacer (PTFE)

Bought a Teflon (PTFE) intake spacer for the intake manifold from Thermatec. It will isolate the intake manifold from the warm engine, which will result in lower intake temperatures. The phenolic spacers are identical in function, only the material used is different.

Lowering the Intake Air Temperature (IAT), will result in higher power figures. A simple supporting mod, which is quite inexpensive.

Pro tip: make a small indentation in the top left corner of the spacer where the bolt would go through the spacer/gasket (where the thermostat housing is), this will make the installation a lot easier due to the restricted space in that area.

URL: www.ebay.nl/itm/302474396288

Volvo S80 2.4T Thermatec Phenolic Intake Spacer

Volvo S80 2.4T Thermatec Phenolic Intake Spacer

Volvo S80 2.4T Thermatec Phenolic Intake Spacer




Volvo S80 2.4T Japanifold Exhaust Manifold

When I wanted to mount the TD04HL-16T turbo, I also wanted to couple it with the Japanifold, that should give good performance, but also the distinctive rumble of the 5 cilinder engine. I scored one via internet for a good price. The quality is immaculate, as they can handle a lot of abuse before they even start cracking.

But in the end I sold it, because my 2.4T already had the Japanifold fitted, so happy days 🙂 !

They are made in Japan, hence the name “Japanifold”. Partnr: 9207688

Volvo S80 2.4T Japanifold

Volvo S80 2.4T Japanifold

Volvo S80 2.4T Japanifold

Volvo S80 2.4T Japanifold